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Add test for ImageStrategy
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Stypox
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package org.schabi.newpipe.util.image;
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import static org.junit.Assert.assertEquals;
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import static org.schabi.newpipe.extractor.Image.HEIGHT_UNKNOWN;
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import static org.schabi.newpipe.extractor.Image.WIDTH_UNKNOWN;
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import static org.schabi.newpipe.util.image.ImageStrategy.choosePreferredImage;
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import static org.schabi.newpipe.util.image.ImageStrategy.estimatePixelCount;
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import org.junit.Test;
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import org.schabi.newpipe.extractor.Image;
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import org.schabi.newpipe.extractor.Image.ResolutionLevel;
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import java.util.List;
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public class ImageStrategyTest {
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private static final List<ResolutionLevel> RESOLUTION_LEVELS = List.of(
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ResolutionLevel.LOW, ResolutionLevel.MEDIUM, ResolutionLevel.HIGH);
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private Image img(final int height, final int width) {
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return new Image("", height, width, ResolutionLevel.UNKNOWN);
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}
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private Image img(final String url, final ResolutionLevel resolutionLevel) {
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return new Image(url, HEIGHT_UNKNOWN, WIDTH_UNKNOWN, resolutionLevel);
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}
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private Image img(final String url,
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final int height,
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final int width,
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final ResolutionLevel resolutionLevel) {
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return new Image(url, height, width, resolutionLevel);
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}
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private void assertChoosePreferredImage(final String low,
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final String medium,
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final String high,
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final List<Image> images) {
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assertEquals(low, choosePreferredImage(images, PreferredImageQuality.LOW));
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assertEquals(medium, choosePreferredImage(images, PreferredImageQuality.MEDIUM));
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assertEquals(high, choosePreferredImage(images, PreferredImageQuality.HIGH));
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}
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// CHECKSTYLE:OFF
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@Test
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public void testEstimatePixelCountAllKnown() {
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assertEquals(20000.0, estimatePixelCount(img(100, 200), 1.0), 0.0);
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assertEquals(20000.0, estimatePixelCount(img(100, 200), 12.0), 0.0);
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assertEquals( 100.0, estimatePixelCount(img(100, 1), 12.0), 0.0);
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assertEquals( 100.0, estimatePixelCount(img( 1, 100), 0.5), 0.0);
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}
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@Test
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public void testEstimatePixelCountHeightUnknown() {
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assertEquals( 10000.0, estimatePixelCount(img(HEIGHT_UNKNOWN, 100), 1.0 ), 0.0);
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assertEquals( 20000.0, estimatePixelCount(img(HEIGHT_UNKNOWN, 200), 2.0 ), 0.0);
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assertEquals( 10.0, estimatePixelCount(img(HEIGHT_UNKNOWN, 1), 0.1 ), 0.0);
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assertEquals(230400.0, estimatePixelCount(img(HEIGHT_UNKNOWN, 640), 16.0/9.0), 0.0);
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}
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@Test
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public void testEstimatePixelCountWidthUnknown() {
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assertEquals( 10000.0, estimatePixelCount(img(100, WIDTH_UNKNOWN), 1.0 ), 0.0);
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assertEquals( 20000.0, estimatePixelCount(img(200, WIDTH_UNKNOWN), 0.5 ), 0.0);
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assertEquals( 12.0, estimatePixelCount(img( 1, WIDTH_UNKNOWN), 12.0 ), 0.0);
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assertEquals(230400.0, estimatePixelCount(img(360, WIDTH_UNKNOWN), 16.0/9.0), 0.0);
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}
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@Test
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public void testEstimatePixelCountAllUnknown() {
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assertEquals(0.0, estimatePixelCount(img(HEIGHT_UNKNOWN, WIDTH_UNKNOWN), 1.0 ), 0.0);
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assertEquals(0.0, estimatePixelCount(img(HEIGHT_UNKNOWN, WIDTH_UNKNOWN), 12.0 ), 0.0);
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assertEquals(0.0, estimatePixelCount(img(HEIGHT_UNKNOWN, WIDTH_UNKNOWN), 0.1 ), 0.0);
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assertEquals(0.0, estimatePixelCount(img(HEIGHT_UNKNOWN, WIDTH_UNKNOWN), 16.0/9.0), 0.0);
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}
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// CHECKSTYLE:ON
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@Test
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public void testChoosePreferredImageAllKnown() {
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// the resolution level of the images is more important than the actual resolution
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assertChoosePreferredImage("a", "b", "c", List.of(
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img("a", 1, 1, ResolutionLevel.LOW),
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img("b", 200, 200, ResolutionLevel.MEDIUM),
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img("c", 10000, 10000, ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("a", "b", "c", List.of(
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img("a", 10000, 10000, ResolutionLevel.LOW),
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img("b", 200, 200, ResolutionLevel.MEDIUM),
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img("c", 1, 1, ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("b", "c", "d", List.of(
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img("a", 2, 1, ResolutionLevel.LOW),
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img("b", 50, 25, ResolutionLevel.LOW),
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img("c", 200, 100, ResolutionLevel.LOW),
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img("d", 300, 150, ResolutionLevel.LOW)
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));
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assertChoosePreferredImage("c", "d", "d", List.of(
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img("a", 2, 1, ResolutionLevel.MEDIUM),
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img("b", 50, 25, ResolutionLevel.MEDIUM),
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img("c", 60, 30, ResolutionLevel.MEDIUM),
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img("d", 300, 150, ResolutionLevel.MEDIUM)
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));
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}
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@Test
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public void testChoosePreferredImageSomeKnown() {
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// the resolution level of the images is more important than the actual resolution
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assertChoosePreferredImage("a", "b", "c", List.of(
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img("a", 1, WIDTH_UNKNOWN, ResolutionLevel.LOW),
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img("b", HEIGHT_UNKNOWN, 200, ResolutionLevel.MEDIUM),
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img("c", 10000, WIDTH_UNKNOWN, ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("a", "b", "c", List.of(
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img("a", HEIGHT_UNKNOWN, 10000, ResolutionLevel.LOW),
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img("b", 200, WIDTH_UNKNOWN, ResolutionLevel.MEDIUM),
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img("c", HEIGHT_UNKNOWN, 1, ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("b", "c", "d", List.of(
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img("a", HEIGHT_UNKNOWN, 1, ResolutionLevel.HIGH),
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img("b", 50, WIDTH_UNKNOWN, ResolutionLevel.HIGH),
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img("c", HEIGHT_UNKNOWN, 120, ResolutionLevel.HIGH),
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img("d", 340, WIDTH_UNKNOWN, ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("c", "d", "d", List.of(
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img("a", 2, WIDTH_UNKNOWN, ResolutionLevel.MEDIUM),
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img("b", HEIGHT_UNKNOWN, 50, ResolutionLevel.MEDIUM),
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img("c", 60, WIDTH_UNKNOWN, ResolutionLevel.MEDIUM),
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img("d", HEIGHT_UNKNOWN, 340, ResolutionLevel.MEDIUM)
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));
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}
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@Test
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public void testChoosePreferredImageMixed() {
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for (final ResolutionLevel resolutionLevel : RESOLUTION_LEVELS) {
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assertChoosePreferredImage("d", "b", "c", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("b", 200, 100, resolutionLevel),
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img("c", 400, WIDTH_UNKNOWN, resolutionLevel),
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img("d", HEIGHT_UNKNOWN, 50, resolutionLevel),
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img("e", resolutionLevel)
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));
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}
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for (final ResolutionLevel resolutionLevel : RESOLUTION_LEVELS) {
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assertChoosePreferredImage("b", "b", "b", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("b", 200, 100, resolutionLevel),
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img("e", resolutionLevel)
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));
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}
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assertChoosePreferredImage("b", "b", "e", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("b", 200, 100, ResolutionLevel.LOW),
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img("e", ResolutionLevel.HIGH)
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));
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}
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@Test
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public void testChoosePreferredImageAllUnknown() {
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assertChoosePreferredImage("b", "c", "d", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("b", ResolutionLevel.LOW),
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img("c", ResolutionLevel.MEDIUM),
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img("d", ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("c", "c", "d", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("c", ResolutionLevel.MEDIUM),
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img("d", ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("b", "c", "c", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("b", ResolutionLevel.LOW),
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img("c", ResolutionLevel.MEDIUM)
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));
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// UNKNOWN is avoided as much as possible
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assertChoosePreferredImage("d", "d", "d", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("d", ResolutionLevel.HIGH)
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));
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assertChoosePreferredImage("b", "b", "b", List.of(
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img("a", ResolutionLevel.UNKNOWN),
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img("b", ResolutionLevel.LOW)
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));
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assertChoosePreferredImage("a", "a", "a", List.of(
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img("a", ResolutionLevel.UNKNOWN)
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));
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}
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}
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